Chevron Corp. expressed interest in developing oil reserves straddling the Iran-Iraq border, potentially putting the American energy giant at risk of violating U.S. sanctions against Tehran, according to comments made public in a leaked diplomatic cable.

El Segundo's Chevron refinery is counting on the state Lands Commission to approve a new lease for its marine terminal in the Santa Monica Bay, despite protests from environmentalists over terms of the long-term deal.

In a rebuke of Chevron remarkable for its swiftness, federal pipeline officials forbid the oil giant late Wednesday from restarting its troubled east-bench pipeline, saying it is unsafe for life, property and the environment.

The government gave Chevron the go-ahead in September to drill in the North Sea near Shetland, in spite of the US oil giant’s admission that its contractor's spill prediction software constantly crashed and was not a reliable predictor of how far oil could travel if an accident...